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Pressure Altimeter Systems
- Aerospace Standard
- AS8009B
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Aerospace Standard (AS) specifies minimum performance requirements for primary pressure altimeter systems other than air data computers.
This document covers altimeter systems that measure and display altitude as a function of atmospheric pressure. The pressure transducer may be contained within the instrument display case or located remotely. Requirements for air data computers are specified in AS8002. Some requirements for nontransducing servoed altitude indicators are included in AS791.
The instrument system specified herein does not include aircraft pressure lines. Unless otherwise specified, whenever the term “instrument” is used, it is to be understood to be the complete system of pressure transducer components, any auxiliary equipment, and display components.
The test procedures specified herein apply specifically to analog type instruments. Digital instruments or automatic test instrumentation may require other test procedures. Such differing procedures shall be justified prior to use.
Rationale
A general update of AS8009 was requested. areas that were investigated included making the testing requirement of as8009 compatible with those of appendix E(6)(1) of Far 43, providing cold weather correction, referencing both feet and meters and updating the environmental section to call out DO-160D.
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Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| TABLE 1 | Leakage Static Pressure | |
| TABLE 2 | Scale and Hysteresis Errors for Increasing and Decreasing Altitude (AMBIENT ROOM TEMPERATURE) | |
| TABLE 3 | Different Instrument Orientations | |
| TABLE 4 | Barometric Setting Mechanism | |
| TABLE 5 | Stop and Jump Friction Error | |
| TABLE 6 | Static Friction | |
| TABLE 7 | Threshold | |
| TABLE 9 | Cold Temperature Correction Altitude Correction Chart |
Issuing Committee
The A-4 Committee/Sub-Committees are responsible for mechanical, electromechanical and electronic cockpit instrumentation standards applicable to all civil aircraft, with emphasis on minimum performance standards intended for reference in the Federal Aviation Administration (FAA) Technical Standard Orders (TSO).
Reference
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